After their third loss in four games, Henrik Lundqvist pleaded with the Rangers to raise their battle level.

“It’s important right now not to focus too much on structure or details,” he said after Saturday night’s 4-1 loss to the Canadiens at Madison Square Garden. “It’s the mindset to will yourself to win battles all over the ice. I think this game is all about battles, and that’s been the biggest difference in our last four games — winning the battles all over the ice, in front of the net, along the boards. Then I need to come up with the big save when I have to. We need to have more desperation than the other team.”

Klein won’t make trip

Defenseman Kevin Klein, who had an MRI last week to determine whether something more than back spasms has kept him sidelined, will not make the three-game trip to Florida and Raleigh, coach Alain Vigneault said Saturday.

Michael Grabner apparently will make the trip, which begins tomorrow at Tampa Bay. He missed his second game Saturday night with hip soreness.

Sticking together

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For the moment, former Wisconsin teammates Ryan McDonagh and Brendan Smith will remain paired together on defense.

“When you can get some continuity there, guys understand one another and read off one another, but it depends on how guys are playing,’’ Vig neault said. “Right now I like him with McDonagh.”

Power play out of sync

With the 0-for-19 power play, “there’s no doubt that our guys are thinking about it a lot,’’ Vigneault said. “It’s in the back of your mind, so you’ve got to shut the mind off a little bit.”